local exchange (GATHER, SINGLE, [])
    remote exchange (GATHER, SINGLE, [])
        final aggregation over (sm_type, substr, web_name)
            local exchange (GATHER, SINGLE, [])
                remote exchange (REPARTITION, HASH, ["sm_type", "substr", "web_name"])
                    partial aggregation over (sm_type, substr, web_name)
                        join (INNER, REPLICATED):
                            join (INNER, REPLICATED):
                                join (INNER, REPLICATED):
                                    join (INNER, REPLICATED):
                                        scan web_sales
                                        local exchange (GATHER, SINGLE, [])
                                            remote exchange (REPLICATE, BROADCAST, [])
                                                scan date_dim
                                    local exchange (GATHER, SINGLE, [])
                                        remote exchange (REPLICATE, BROADCAST, [])
                                            scan ship_mode
                                local exchange (GATHER, SINGLE, [])
                                    remote exchange (REPLICATE, BROADCAST, [])
                                        scan warehouse
                            local exchange (GATHER, SINGLE, [])
                                remote exchange (REPLICATE, BROADCAST, [])
                                    scan web_site
